the first slave owner in the US was a black; Indian tribes regularly raided for slaves - took whites blacks and other Indians. US Indian tribes should disband because they were slavers!
Sacajewa - a Shoshone, the Lewis & Clark guide was captured in a raid and enslaved by the Crow (technically the Hidatsa - a Siouan people today consideed to be predecessors of the modern Crow.). Toussaint Charbonneau - her husband, purchased or won the Shoshone girl Sacagawea (Bird Woman) from the Crow (Hidatsa). The Crow (Hidatsa) had captured Sacagawea on one of their annual raiding and hunting parties to the west. I don’t think the Crow did these raids on other Indians just to take in the sights ! They did to express power and to take captives. I am also sure the weren’t the only tribes who did this.